Tongue-cutting device for paper-bag machines



May 4 1926. 1,583,394-

A. C. COTY TONGUE CUTTING DEVICE FOR PAPER BAG MACHINES Filed Oct. 14, 1925 2 Sheets-Shet l Glgred C.Cocy

May 4 1926.

A. C. COTY TONGUE CUTTING DEVICE FOR PAPER BAG MACHINES Filed Oct. 14, 1925 2 Sheets-Sheet 2 gywe'ntoz G1 1s red C.COLL] Patented May 4, 1926. I

UNITED STATES 1,583,394 PATENT OFFICE.

ALFRED C. CO'IY, OF CAR'IHAGE, NEW YORK, ASSIGNOR Tl) Tl-IE WATERTOWN BAG 'MACHINE COMPANY, INC A COREORATION OF NEW YORK.

TONGUE-CUTTING DEVICE roa PAPER-BAG MACHINES.

Original application filed August 20, 1921, Serial October-14, 1925.

To all whom it may concern Be it known that I, ALFRED C. Co'rY, a citizen of the United States, and a resident of Carthage, in the county of Jefferson and State of New York, have invented an Improvement in a Tongue-Cutting Device for Paper-Bag Machines, ofwhi'ch the following is a specification. I I

This application relates to a tongue-cutting device for paper bag machines and is a division of my pending application Serial No. 493,872, filed August 20, 1921, for Apparatus for making paper bags.

111 such apparatus it is customary to form-paper strips into tubes, then sever the tubes into'lengths and, finally, form a closure at one end of eachlength to form the length into a bag. In this final step, the end of the tube is first opened up, and, in order to perform this operation cnvenieritly,it is customary to leave a tongue or tab extending from one side of one end of the length'when it is severed from the tube.- My present device has for its object to provide an improved mechanism for cutting these tongues. or tabs. I

The accompanying drawings'show one embodiment of my improved form of tonguecutting mechanism, with enough of the. associated "mechanism to indicate how it is combined with the other parts'of a paper bag machine.

In these drawings, Figure 1 is a side elevation, broken away, of the part of the ma chine which contains the tongue-cutting device. Fig. 2 is an end elevation of the tongue-cutting mechanism which is shown in its assembled relation in Fig. 1. Fig. 3 is an end elevation, on an enlarged scale, of the slot-bar hereinafter referred to, and which is shown in Fig. 2. Fig. 4 is a similar view of the adj ustable knife which cooperates with the slot-bar. Fig. 5 is a section on the line '5-5 of Fig. 3. Fig. .6 is a sectionon the line 66 of Fig. 4. Fig. 7 is a section on the line 77 of Fig. 2. Figs. 8, 9' and 10 show successive stages of the operation of forming a bag from a sheetof paper.

-In order to make the operation of these. devices in connection with the paperbag machine shown in my prior application somewhat plainer, I have used, in these drawings, the same reference characters as are to be found in my prior application. I will .11 493,872. Divided and this application filed Serial No. 62,363.

first describe the mechanism in a general way, for which reference to Fig. 11s suflicient, and this will describe the detailed construction of the tongue-cutting mechanism.

Fig. 1 shows a web 10 of paper, which is drawn from a roll 11' and is pulled up over rollers 40 and 41 and thence passes through the tongue-cutting device indicated generally by the reference number 13. Thereafter the sheet passes to a former 14, by which it is folded into tubular form, and the succeeding operations hereinbefore referred to are performed. A paste roller 12, running in a receptacle 42, applies paste to one edge of the paper as the paper'is drawn over the roller 41. Y

The tongue-cutting mechanism is shown in Figs. 1 to 7. Itcomprises parallel horizontal-shafts 45, 46, see particularly Fig. 2, one above and one below the pathof the paper, which are driven in synchronism with each other and in pro er timing with the other parts of the machine. Both shafts'are driven by beveled gearing from a vertical shaft 47, which is in turn operatively con 'nected with a cross shaft 48, which derives its power from the shaft 49, extending longitudinallyof the machine, as shown in Figs. 1 and 2. It will be understood that this shaft 49 has appropriate connection with the main driving shaft ofthe machine. One of the shafts, in this case the upper one,

carries two arms 50, 50 held in adjusted position by'set screws 50, 50, at the ends of which arms is mounted 'a head 51 bearing aplurality of knives .52, 52 of diflerent lengths and curved at their ends for cut ting tongues of different widths in the sheet.

Four knives are shownin the drawing, and their arrangement is as shown best in section in Fig. 6 and in elevation in Fig. 4. The head containing the knives, which is adjustable to bring any one of them into operative cuttingposition, may be of any suit able construction. As shown, it is built up with angle irons 53, 53secured in heads 54, 54 formed withstud bolts 55, 55, which extend through the collars 5 6, 56 on the ends of the supporting arms 50, For use, the head is adjusted to bring the desired knife to cutting position and then the nuts on the stud bolts are tightened tohold it .in 'ad-' justed position. The other, or lower shaft 46, similarly carries two arms 58, 58 held in adjusted position by set screws 58, 58 in the ends of which arms is mounted a coopera ting slotted head or slot bar 59, so deslgned that each tongue cutting knife will in use project into a suitably shaped slot. In the structure illustrated, separate slots 60,60 are provided, one for each knife, and the head is made adjustable in substantially the same manner as the knife carrying head. This slot bar comprises a tube 59 and a shaft 59 extending therethrough and through collars on the end of the arms 58, as already sufficiently described.

When bagsof different lengths are being made, the sheet 10 will move at different speeds relative to the speed of the drive of the tongue-cutting mechanism. It is important, in machines of this character, to adjust the speed of the various parts so that the paper will pass through any given mechanism at the rate at which the mechanism is moving and thus avoid tearing. In this tongue-cutting mechanism, this isaccomplished by making the movement 'of the knife and slotted head at the same speed as that of the paper. To effect this, the arms and 58 are made adjustable in the shaft to vary the effective radii of the cylinders of revolution described by the knives; and, in order to bring the knives and slot bar into. proper cooperative registry, I make the shafts 45 and 46 adjustable toward and away from each other. To effect this, the shafts are carried by journals 61, 61, which slide in ways onopposite sides of the machine, see particularly Fig. 2. The journals 61, of the two shafts, may be approximated or separated by means of right and 'lefthand screws 62, 62 engaging with threaded brackets, as shown, the other ends of the brackets carrying the journals. Gears 61 61 operated by the shaft 47, slide upon that shaft as do the collars which carry the shaft so that when the screws 62 are operated by means of the shaft 63 engaging with them by beveled gear, as shown, the collars and journals move toward one another or away from one another according to the direction in which the shaft 63 is turned. A square end may be formed on the shaft, or any other desired means of rotating it manually may be adopted.

The tongue-cutting mechanism operated as above described cuts a tongue 43 In the sheet ofpaper as shown in Fig. 8. When the edges of the paper are pasted together as shown in Fig. 9, the tongue is preferably upon the side of the sheet opposite the seam. Thereafter suitable cutting devices are employed which complete the cutting where each tongue-43' occurs, and thereby lengths such as shown in Fig. 10 are produced. It will be readily apparentthat the tongue or tab 43 on the forward end of the length may be gripped b suitable mechanism to open up the end 0 the tube.

While I have described in detail one emsynchronously in opposite directions, a plurality of knives carried by one of the shafts and arranged to be brought selectively into operative position and a slot-bar carried by the other shaft and arranged to register with the knife WhlCh'lS in operating position.

2. In paper tube forming apparatus for making paper bags, a tongue forming mechanism comprising a. pair of carriers and means for rotating them synchronously, a plurality of knives mounted upon one carrier, means for adjusting any one of the knives into cutting position in the carrier, and an abutment mounted in the other carrier and provided with slots adjustable to register with the knives, each slot being of a size and shape corresponding with one of the knives.

3. In apparatus for making paper bags, means to feed a paper tube, two carriers rotatable about parallel axes on opposite sides of'the path of the tube, a plurality of knives on one of said carriers adapted to cut different tongues in the tube, means for bringing the knives into operative position selectively, and an abutment on the other carrier having slots corresponding to the various knives.

4. In apparatus for making paper bags, means to feed a paper tube,a rotatable carrier beside the path of the tube, a plurality of knives on the carrier adapted to cut different tongues, and means to adjust the knives on the carrier to bring them into operative relation with the tube selectively.

In testimony whereof, I have hereunto signed my name to this application.

ALFRED o. ooTY. 

